The Isntree Hyper Acid 4 AHA BHA PHA LHA 30 Serum is a real powerhouse in skincare. This transformative serum combines the exfoliating properties of four different acids (AHA, BHA, PHA, and LHA) to specifically target enlarged pores, post-acne marks, and uneven skin texture. Despite its intensive formula, it also focuses on hydration, helping your skin become not only clearer but also firmer and more radiant.
Why will you love it?
Power of a 4-acid complex: A 30% acid concentration exfoliates deeply and on the surface, removing dead skin cells and unclogging pores.
Acne and blackhead control: Thanks to salicylic acid, it effectively fights blackheads and prevents breakouts.
Tone improvement & regeneration: Fades discoloration and post-acne marks while stimulating cell renewal.
Sebum control: Helps balance oily skin and regulates excess oil production.
Barrier protection: Niacinamide strengthens the skin barrier and has anti-inflammatory effects.
Visible texture improvement: Leaves skin smoother, softer, and firmer after just a few uses.
Key ingredients & their roles:
Gluconolactone (PHA): Gently exfoliates while deeply hydrating and supporting skin healing.
Lactic Acid (AHA): Softens the skin surface and supports natural exfoliation.
Glycolic Acid (AHA): Penetrates deeper layers, brightens dark spots, and boosts collagen production.
Niacinamide: Strengthens the skin barrier, acts as an antioxidant, and refines pores.
Salicylic Acid (BHA): Oil-soluble acid that cleans pores from within with antibacterial action.
Main effects:
Deeply cleans pores and refines skin texture.
Evens skin tone and fades pigmentation.
Regulates excess sebum production.
Helps accelerate healing of acne and inflammation.
Expert tip: Treat this as an intensive exfoliating treatment. It is a wash-off product—do not leave it on your skin. Start with once a week to let your skin adapt. Since exfoliation increases sun sensitivity, always use sunscreen the next morning!
How to use:
After cleansing, apply 2–3 drops to dry skin, avoiding the eye and lip area.
Gently massage for about one minute.
Rinse thoroughly with lukewarm water.
Use only in your evening routine! Always apply at least SPF 30 during the day.
Product details:
Volume: 20 ml
Country of origin: South Korea
Type: Intensive 4-acid complex exfoliating serum (wash-off)
Skin type: Oily, combination, acne-prone, and uneven skin.
